UK banks are still using software code that was written in the 1960s and 1970s, with only a handful of employees who understand them. According to a survey of 200 UK banks, 16% rely on software from ...

Researchers discovered long-lost computer code and used it to resurrect the early chatbot ELIZA. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

The original version of this story appeared in Quanta Magazine. Imagine that someone gives you a list of five numbers: 1, 6, 21, 107, and—wait for it—47,176,870. Can you guess what comes next? If ...